Active clinical trials for "Constriction, Pathologic"

This is a prospective, non-randomized, open label, multi-center study including 60 patients with symptomatic ischemic heart disease with 70%-100% coronary artery stenoses and occlusions enrolled and treated in this investigational device study.

The objective of this study is to assess the safety and effectiveness of the COVERA™ Vascular Covered Stent for the treatment of stenotic lesions in the upper extremity venous outflow of the Arteriovenous (AV) access circuit.

The purpose of this research is to compare two different approaches for treating patients with lumbar spinal stenosis: electric dry needling and thrust manipulation versus impairment-based manual therapy, stretching, strengthening and electrothermal modalities. Physical therapists commonly use all of these techniques to treat lumbar spinal stenosis. This study is attempting to find out if one treatment strategy is more effective than the other.

A single arm, prospective multicenter non-randomized pivotal clinical trial evaluating the Edwards SAPIEN XT™ transcatheter heart valve (model 9300TFX), NovaFlex™ transfemoral delivery system, Ascendra2™ transapical delivery system and crimper accessories. The trial includes a premarket pivotal cohort to evaluate the system performance as well as a post market clinical follow-up phase involving long term follow-up of all patients to evaluate the safety of investigational devices up to 5 years.

The primary purpose of the study is to measure the change in severity of symptoms and ability to function in every day activities in patients suffering from degenerative lumbar spinal stenosis after treatment with the Aperius® device.

The purpose of this study is to further evaluate the long-term safety and effectiveness of the Biocor and Biocor Supra Valves.

The primary objective of the proposed pilot study is to determine the efficacy of pregabalin in prolonging the time to onset of pain and reducing the severity of pain associated with walking in patients with neurogenic claudication. Neurogenic claudication is defined as movement induced leg pain, numbness, heaviness, or vague discomfort in part or all of one or both legs provoked with walking and standing and relieved by sitting, squatting, or forward flexion posturing. The secondary objective is to examine the functional benefit of pregabalin with respect to improvement in duration and distance of walking.

Post-Approval Clinical Study Comparing the Long Term Safety and Effectiveness of coflex vs. Fusion to Treat Lumbar Spinal Stenosis

The purpose of this study is to determine if the ACADIA® Facet Replacement System is effective in the treatment of spinal stenosis. The primary objective of the study is to evaluate the overall success rate of the Anatomic Facet Replacement System in patients with spinal stenosis when compared to a posterior spinal fusion control.

The aim of this study is to determine, in patients with grade 1 degenerative spondylolisthesis with spinal stenosis, if decompression and lumbar spinal fusion with, or without supplementary pedicle screw fixation yields an improved patient reported outcome.